Kwa m4 fire issue

[Stew3437]

I have a kwa m4 with a version 2 gear box in that has decided to fire on full auto all the time or just jam the trigger and not fire at all any one had this issue or know the fix as I'm playing next Sunday and need to fix it fast

[CES_williamson]

i would say check all the wiring that's what happened on mine it will be short cir circuiting or its your fire selector plate